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Proceedings Paper

Refractive index sensitivity of optical fiber lossy-mode resonance sensors based on atomic layer deposited TiOx thin overlay
Author(s): Dariusz Burnat; Marcin Koba; Łukasz Wachnicki; Sylwia Gierałtowska; Marek Godlewski; Mateusz Śmietana
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Paper Abstract

This work presents an optical fiber refractive index sensors based on lossy–mode resonance (LMR) effect supported by titanium oxide (TiOx) thin overlay. The TiOx overlays of different thickness were deposited on core of polymer-clad silica (PCS) fibers using atomic layer deposition (ALD) method. Based on numerical simulations, a number of structures differing in the location of exposed core area and the thickness of TiOx coatings were designed. For fabricated structures the spectral response to external refractive index (next) was measured. The maximum sensitivity reaches 634.2 nm/RIU (next range: 1.357 - 1.402 RIU; TiOx coating thickness: 260.9 nm; investigated spectral range: 500-800 nm) and it highly depends on the thin-film thickness.

Paper Details

Date Published: 30 May 2016
PDF: 4 pages
Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99161G (30 May 2016); doi: 10.1117/12.2236908
Show Author Affiliations
Dariusz Burnat, Warsaw Univ. of Technology (Poland)
Marcin Koba, Warsaw Univ. of Technology (Poland)
National Institute of Telecommunications (Poland)
Łukasz Wachnicki, Institute of Physics (Poland)
Sylwia Gierałtowska, Institute of Physics (Poland)
Marek Godlewski, Institute of Physics (Poland)
Mateusz Śmietana, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 9916:
Sixth European Workshop on Optical Fibre Sensors
Elfed Lewis, Editor(s)

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